Do I need new cam sprockets?
02-23-2005, 03:45 PM
#31
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Originally Posted by Jim_H
Sorry, that was the lift on the #1 valve tappet at 20 degree's past TDC.
02-23-2005, 03:56 PM
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Yes sir I did, well Porken and I, well, I rotated the engine alot while the inventor dude dialed in the cams, ok Ken did it 
Originally Posted by worf928
Ah hah. Ok. So, I assume then that you reset the timing?
02-23-2005, 04:19 PM
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Originally Posted by Jim_H
Yes sir I did, well Porken and I, well, I rotated the engine alot while the inventor dude dialed in the cams, ok Ken did it
02-23-2005, 05:27 PM
#34
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Marc, I'm impressed. A totally selfless and correct post. Thanks
Originally Posted by marc@DEVEK
to put the cam belt back exactly whre it "was" is simple.
1 Mark belt and sprockets
2 remvoe distributor rotor
3 insert 5mm screws
4 measure distance between screw head and leading face of cam sprocket slot. This locks the sprocket to the spyder
5 Remove old sprocket
6 Mark new sprocket with "belt marks"
7 Install sprocket onto spyder and locate with 5mm screws to the distance measured above in step 4
do other side
Simple!
KEEP in mind, that no two cams are identical. By measuring S4 cams, the lobes to keyway are often off. I have found that by measuring 5 sets of cams, that the slot is off by approximately 3+ degrees against #1 lobe.
That si why we have plus or minus 8 degrees of sprocket adjustment.
Marc
1 Mark belt and sprockets
2 remvoe distributor rotor
3 insert 5mm screws
4 measure distance between screw head and leading face of cam sprocket slot. This locks the sprocket to the spyder
5 Remove old sprocket
6 Mark new sprocket with "belt marks"
7 Install sprocket onto spyder and locate with 5mm screws to the distance measured above in step 4
do other side
Simple!
KEEP in mind, that no two cams are identical. By measuring S4 cams, the lobes to keyway are often off. I have found that by measuring 5 sets of cams, that the slot is off by approximately 3+ degrees against #1 lobe.
That si why we have plus or minus 8 degrees of sprocket adjustment.
Marc
02-24-2005, 08:59 AM
#35
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Marc, thanks, sounds like it should be doable w/o changing timing so I'll mark/measure everything and replace. Jim B.....I WAS going to leave the WP alone but, again, Earl advised changing it out as well since it's failure could impact on the belt. I was thinking that a WP failure would just mean the extra labor to go back in and change it but Earl convinced me otherwise. So, hopefully, I WON'T be back in there for another 45,000 miles
thanks,
Jim
thanks,
Jim
03-05-2005, 01:17 PM
#37
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Originally Posted by jim morehouse
So, hopefully, I WON'T be back in there for another 45,000 miles
Jim
Jim
but ya gotta go back in briefly to check/retension...
